Cisco Small Business 220 Series Smart Plus Switches Web Interface Denial of Service Vulnerability

A vulnerability in the web-based management interface of Cisco Small Business 220 Series Smart Plus (Sx220) Switches could allow an unauthenticated, remote attacker to cause the web-based management interface of an affected device to stop responding, resulting in a partial denial of service (DoS) condition on the device.

The vulnerability is due to insufficient validation of HTTP requests by the web-based management interface of an affected device. An attacker could exploit this vulnerability by sending a crafted HTTP request to an affected device via the interface. A successful exploit could allow the attacker to cause the interface to stop responding, resulting in a partial DoS condition that persists until the interface is restarted manually.

Cisco has released firmware updates that address this vulnerability. There are no workarounds that address this vulnerability.

This advisory is available at the following link:

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160831-sps2[“https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160831-sps2”]